Pressure supplying system



Dec. 12, 1933. G. F. YAGER ET AL PRESSURE SUPPLYING SYSTEM Original Filed Aug. 31, 1931 Patented Dec. 12, 1933 PATENT OFFICE 1,939,586 I PRESSURE SUPPLYING SYSTEM GeorgeFQYager and Oliver J. Heath, Toledo,

Ohio, assignors to The Bunting Brass & Bronze Company, Toledo, Ohio, a corporation'of Ohio Original application August 31, 1931, Serial No.

55. Divided and this application May 23,

1932. Serial No. 613,082

r 12 Claims. (01. 22 2-1) This invention relates generally to pressure supplying systems and .constitutes a division of our application .filed August 31, 1931 and bearing Serial Number 560,455.

.-'.-In the accompanying drawing:

.Figure 1 is a top plan view of bodying our invention; a

Figure 2 is a side elevation .thereof with parts broken away and in section. 1

Referringnow to the drawing,A is a pedestal and B is a dial of a conveyor designed to support molding equipment such as the pattern plates 1 and flasks 2 beneath a suitable squeeze plate (not shown) of a molding machine. Preferably the a device em- "15. pedestal A has laterally extending arms3 at its upper end carrying rollers 4 whichsupport the dial B adjacent its peripherwwhilethe dial B is arranged to rotate on thepedestal and isprovided upon its upper face'at spaced points thereof with four risers 5 that'co'nstitute seats for the pattern plates 1. Any suitable means-(not shown) maybe used to stop the dial-when the risers 5 are opposite stations '11, b, c and d respectively. In order that the flasks 2 upon the plates 1 may be vibrated during the molding operation there is a conduit 6 arranged centrally of the pedestal A and connected to a suitable source of fluid under pressure (not shown). This conduit 6 discharges into a chamber 7 formed in a casting 8 arranged centrally of the dial B, Pipes 10 are connected to the casting 8 and extend radially therefrom to points adjacent the risers 5. Preferably each pipe 10 is provided at its outer end with a fitting 12 and is provided intermediate its ends with aportion 13 which depends below the dial B. Preferably the portion 13 of each pipe is provided with a suitable valve 14 that is adapted to be actuated by a stem 14. Fixed to an arm 3 of the pedestal is a support 15 and pivotally mounted on this support is a knee lever 16. Connected to this knee lever is a link 1'7 which in turn is connected at its other end to one arm of a bell crank lever 18 pivoted at 19 on a suitable support carried by the arm 3. The other arm 20 of thebell crank lever is arranged to engage the valve stem 14 when the dial is rotated to position the adjacent riser 5 at station 0. A spring 21 normally holds the end 20 of the bell crank lever out of its engaging position.

In use a flask such as 2 is first placed on the riser 5 at station a. The dial B is then turned to position this flask at station b where it is filled with sand. After this operation the dial is again turned to position the flask at station 0 where the dial is locked against rotation and a sprue is formed in the flask. At this point the sand in the flask-is compressed by a suitable, squeeze plate (not shown) and the lever 18 is actuated so that valve 14 will permit fluid underpressure'to flow through the fitting 12 to suitable mechanism (not shown) for vibrating the flask in accordance with the usual practice.

While it-is believed that from the foregoing description the nature and advantages of the invention will be readily apparent, we desire to have it understood that we do not limit ourselves to what is herein shown and described and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What we claim as our-invention is:

1. In a machine of the character described, a pedestal having a laterally projecting arm, a dial rotatably mountedon the pedestal, a riser upon the dial for supporting a flask, means for con ducting a fluid-underpressure to aflask vibrator including a chamber for air arranged centrally of the dial, a conduit projecting radially from the chamber to a point adjacent the riser, a valve controlling the passage of fluid 'through the c'onduit, and means carried by the arm aforesaid of the pedestal for actuating the valve.

2; In a machine of the character described, a pedestal having a laterally projecting arm, a dial rotatably mounted on the pedestal, a riser upon the dial for supporting a flask,- means for conducting a fluid under pressure to a flask vibrator including a chamber for air arranged centrally of the dial, a conduit projectingfromthe chamber to a point adjacent the riser, a valve controlling the passage of fluid through the conduit, and actuating means for the valve including a member carried by the arm'a-foresaid andoperable from a point adjacent the edge of the dial.

3. In a machine of the characterdescribed-a pedestal having a laterally projecting arm, a 95 dial rotatably mounted on the pedestal, a riser upon the dial for supporting a flask, means for conducting a' fluid under pressure to a flask vibrator includinga fluid conduit associated with the pedestal and dial, a valvecontrolling-the passage 100 of fluid through the conduit, and actuating means for the valve including a spring actuated lever carried by the arm and engageable with the valve, an operating lever adjacent an edge of the dial, and an operating connection between said levers. 105

4. In a machine of the character described, a pedestal having a laterally projecting arm, a dial rotatably mounted on the. pedestal over said arm,

a riser carried by the dial and adapted to support a fla k, means ior conducting a fluid under pres- Cir sure to a vibrator for the flask including a chamber for air arranged centrally of the dial, a conduit projecting from the chamber to a point adjacent the riser and having a portion below the dial, a valve in the portion aforesaid of the conduit, and actuating means for the valve including a member carried by the arm and operable from a point adjacent the edge of the dial.

5. In a machine of the character described, a pedestal, a dial rotatably mounted on the pedestal, a riser on the dial and adapted to support a flask, a conduit arranged centrally of the pedestal and adapted to receive a fluid under pressure, a chamber associated with the dialand .adapted to receiver fluid under pressure from the conduit, a pipe extending from the chamber and terminating adjacent the riser for supplying fluid under pressure to a flask vibrator, a portion of said pipe being below the dial, a valve in said portion, a bracket fixed to the pedestal, a hand lever carried bythe bracket, a bell crank lever carried by the pedestal and engageable withthe valve, and an operating connection between saidlevers.

6. In a machine of the character described, a pedestal, a dial'rotatably mounted on the pedestal, risers on the. dial for supporting flasks, a conduit arranged centrally of the pedestal and adapted to receive a fluid under pressure, a chamber associated with the dial and adapted to receive fluid from the conduit,-pipes extending radially from the chamberand terminating adjacent the risers for supplying. fluid under pressure to flask vibrators, portions of said pipes being below the dial, valves in said portions, a bracket fixed to the pedestal, a hand lever carried by the bracket, a bell crank lever carried by the pedestal and successively engageable with the valves as the dial is turned, and an operating connection between said levers. I

7. In a machine of the class described, a pedestal, a flask supporting dial rotatably mounted on said pedestal, a riser on the dial andadapted to support a flask, a conduit arranged centrally of the pedestal and adapted to receive a fluid under pressure, a chamber-arranged centrally of the dial and adapted to receive fluid under pressure from the conduit, a pipe extending from the chamber and terminating adjacent the riser for supplying fluid under. pressure to a flask vibrator, a valve controlling the passage of fluid through the pipe, a bracket fixed to the pedestal, a hand lever carried by the bracket, a bell crank lever carried by the pedestal, and engageable with the valve, and an operating connection between said levers.

8. In a machine of the class described, a pedestal having a laterally extending arm, a flask supporting dial rotatable on the pedestal over the arm, means for conducting a fluid under pressure to a flask vibrator, including a chamber for air arranged centrally of the dial, a pipe projecting radially from the chamber, a valve controlling the'passage of fluid throughthe pipe, and actuating means for the valve including a spring actuated member carried by the arm and engageable with the valve, an operating member adjacent an edge of the dial, and an operating connection between said members.

9. In a machine of the class described, a pedestal, a dial rotatably mounted on the pedestal, risers on the dial for supporting flasks, a conduit arranged centrally of the pedestal and adapted to receive a fluid under pressure a chamber associated with the dial and adapted to receive fluid from the conduit, pipes extending from the chamber and terminating adjacent the risers for supplying fluid under pressure to flask vibrators, valves controlling the passage of fluid through the pipes, and actuating means for the valves including a single member successively engageable with said valves, and a control member at an edge of the dial and operatively connected to said member.

10. In a machine of the class described, a pedestal having a plurality of laterally extending arms, a dial rotatably mounted on the pedestal over said arms, risers on the dial for supporting flasks, a chamber for air under pressure arranged centrally of the dial, pipes extending from the chamber and terminating adjacent the risers for conducting the air under pressure from the chamher to flask vibrators, a control member carried by movable member aforesaid as said dial is rotated over the pedestal arms.

11. In a machine of the class described, a pedestal havingqa plurality of laterally extending arms, a dial rotatably mounted on the pedestal oversaid arms, risers on the dial for supporting flasks, a chamber for air under pressure arranged centrally ofthe dial, pipes extending from the chamber and terminating adjacent the risers for conducting the air under pressure from the chamber to flask vibrators,:valves controlling the passage of fluid to the pipes, and actuating means for the valves including a member carried by one of thearms and successively engageable with said valves. Y

12. In a machine of the class described, a pedestaL-a dial rotatably mounted on said pedestal, a riser carried by the dial and adapted to support a flask, means for conducting a fluid under pressure to a vibrator for the flask, including a chamber for air arranged centrally of the dial, a conduit projecting laterally from the chamber 150 over the dial to a point adjacent the riser and having a substantially U-shaped portion extending downwardly through the dial with the base of the U beneath and substantially parallel to the lower face of the dial, and a valve in the base of the U-shaped portion of said conduit operable when the dial is in a predetermined position for controlling the passage of air in said conduit.

GEORGE F. YAGER. OLIVER J. HEATH. 

